I started Crossfit in Dunedin, New Zealand, in March 2012, when I was a visiting professor at the University of Otago. It was autumn in the southern hemisphere, the days were getting too short to get very much time in on my bike, and I didn’t want to join a traditional gym. I’d heard the buzz about Crossfit, and this seemed like an ideal time to give it a go. I went in thinking of it as a bit of an experiment, and 10 months in I’m a convert.